diff options
Diffstat (limited to 'sound/soc/meson/axg-tdm-interface.c')
| -rw-r--r-- | sound/soc/meson/axg-tdm-interface.c | 54 |
1 files changed, 27 insertions, 27 deletions
diff --git a/sound/soc/meson/axg-tdm-interface.c b/sound/soc/meson/axg-tdm-interface.c index 87cac440b..60d132ab1 100644 --- a/sound/soc/meson/axg-tdm-interface.c +++ b/sound/soc/meson/axg-tdm-interface.c @@ -12,6 +12,9 @@ #include "axg-tdm.h" +/* Maximum bit clock frequency according the datasheets */ +#define MAX_SCLK 100000000 /* Hz */ + enum { TDM_IFACE_PAD, TDM_IFACE_LOOPBACK, @@ -155,19 +158,27 @@ static int axg_tdm_iface_startup(struct snd_pcm_substream *substream, return -EINVAL; } - /* Apply component wide rate symmetry */ if (snd_soc_component_active(dai->component)) { + /* Apply component wide rate symmetry */ ret = snd_pcm_hw_constraint_single(substream->runtime, SNDRV_PCM_HW_PARAM_RATE, iface->rate); - if (ret < 0) { - dev_err(dai->dev, - "can't set iface rate constraint\n"); - return ret; - } + + } else { + /* Limit rate according to the slot number and width */ + unsigned int max_rate = + MAX_SCLK / (iface->slots * iface->slot_width); + ret = snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_RATE, + 0, max_rate); } - return 0; + if (ret < 0) + dev_err(dai->dev, "can't set iface rate constraint\n"); + else + ret = 0; + + return ret; } static int axg_tdm_iface_set_stream(struct snd_pcm_substream *substream, @@ -266,8 +277,8 @@ static int axg_tdm_iface_set_sclk(struct snd_soc_dai *dai, srate = iface->slots * iface->slot_width * params_rate(params); if (!iface->mclk_rate) { - /* If no specific mclk is requested, default to bit clock * 4 */ - clk_set_rate(iface->mclk, 4 * srate); + /* If no specific mclk is requested, default to bit clock * 2 */ + clk_set_rate(iface->mclk, 2 * srate); } else { /* Check if we can actually get the bit clock from mclk */ if (iface->mclk_rate % srate) { @@ -517,21 +528,13 @@ static int axg_tdm_iface_probe(struct platform_device *pdev) /* Bit clock provided on the pad */ iface->sclk = devm_clk_get(dev, "sclk"); - if (IS_ERR(iface->sclk)) { - ret = PTR_ERR(iface->sclk); - if (ret != -EPROBE_DEFER) - dev_err(dev, "failed to get sclk: %d\n", ret); - return ret; - } + if (IS_ERR(iface->sclk)) + return dev_err_probe(dev, PTR_ERR(iface->sclk), "failed to get sclk\n"); /* Sample clock provided on the pad */ iface->lrclk = devm_clk_get(dev, "lrclk"); - if (IS_ERR(iface->lrclk)) { - ret = PTR_ERR(iface->lrclk); - if (ret != -EPROBE_DEFER) - dev_err(dev, "failed to get lrclk: %d\n", ret); - return ret; - } + if (IS_ERR(iface->lrclk)) + return dev_err_probe(dev, PTR_ERR(iface->lrclk), "failed to get lrclk\n"); /* * mclk maybe be missing when the cpu dai is in slave mode and @@ -542,13 +545,10 @@ static int axg_tdm_iface_probe(struct platform_device *pdev) iface->mclk = devm_clk_get(dev, "mclk"); if (IS_ERR(iface->mclk)) { ret = PTR_ERR(iface->mclk); - if (ret == -ENOENT) { + if (ret == -ENOENT) iface->mclk = NULL; - } else { - if (ret != -EPROBE_DEFER) - dev_err(dev, "failed to get mclk: %d\n", ret); - return ret; - } + else + return dev_err_probe(dev, ret, "failed to get mclk\n"); } return devm_snd_soc_register_component(dev, |